31261062255205 has 16 divisors (see below), whose sum is σ = 38742382494720. Its totient is φ = 24196996734912.

The previous prime is 31261062255161. The next prime is 31261062255209. The reversal of 31261062255205 is 50255226016213.

It is a cyclic number.

It is not a de Polignac number, because 31261062255205 - 2⁹ = 31261062254693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31261062255209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 471974469 + ... + 472040698.

It is an arithmetic number, because the mean of its divisors is an integer number (2421398905920).

Almost surely, 2^{31261062255205} is an apocalyptic number.

It is an amenable number.

31261062255205 is a deficient number, since it is larger than the sum of its proper divisors (7481320239515).

31261062255205 is a wasteful number, since it uses less digits than its factorization.

31261062255205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 944015388.

The product of its (nonzero) digits is 216000, while the sum is 40.

The spelling of 31261062255205 in words is "thirty-one trillion, two hundred sixty-one billion, sixty-two million, two hundred fifty-five thousand, two hundred five".